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Volume 43 Issue 7
Jul.  2021
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Article Contents
Dong Zhaoqing,Lu Xiaoqing,Shi Lijian, et al. Multi temporal and spatial difference analysis of various MSS models and Arctic sea ice freeboard[J]. Haiyang Xuebao,2021, 43(7):183–193 doi: 10.12284/hyxb2021109
Citation: Dong Zhaoqing,Lu Xiaoqing,Shi Lijian, et al. Multi temporal and spatial difference analysis of various MSS models and Arctic sea ice freeboard[J]. Haiyang Xuebao,2021, 43(7):183–193 doi: 10.12284/hyxb2021109

Multi temporal and spatial difference analysis of various MSS models and Arctic sea ice freeboard

doi: 10.12284/hyxb2021109
  • Received Date: 2020-12-23
  • Rev Recd Date: 2021-04-12
  • Available Online: 2021-06-07
  • Publish Date: 2021-07-25
  • Based on the CryoSat-2 L1B data for April 2017−2019, this study compares and analyzes the multi temporal and spatial scale differences of UCL13, DTU10, DTU13, DTU15 and DTU18 mean sea surface height (MSS) models and the Arctic sea ice freeboard retrieval. The differences of various mean sea surface height models and the sea ice freeboard retrieval are compared with UCL13. The experimental results show that the average absolute deviation range between different MSS models is 0.19−0.26 m as well as the standard deviation range is 0.55−0.57 m, among which the difference between DTU18 and UCL13 is the smallest. The mean absolute deviation range of sea ice freeboard retrieved by the other four MSS models is 0.50−0.79 cm with the standard deviation range is 1.17−1.74 cm. Compared to airborne Operation IceBridge (OIB) data, the correlation coefficients of sea ice freeboard retrieved by the five MSS models range from 0.70 to 0.71 with the root mean square error range is 7.7−7.8 cm. Therefore, the biases between various MSS models have little influence on sea ice freeboard retrievals in the entire Arctic region, since biases impact both the lead and ice floe height measurements in the same way, and thus cancel out. However, in the areas with sparse leads, such as the northern Canadian Islands and the Laptev Sea, the sea ice freeboard retrieved by different MSS models varies greatly.
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